CRC16查表计算教学文案.doc

CRC16查表计算教学文案.doc

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1、CRC16查表计算参数1:要进行CRC计算的数组地址参数2:要进行CRC计算的数组长度/*************************************************************************************************/uint16crc16(uint8*puchMsg,uint16usDataLen)  {    uint8uchCRCHi=0xFF;/*高CRC字节初始化*/    uint8uchCRCLo=0xFF;/*低CRC字节初始化*/    uint32uIndex;/*CRC循环中的索引*/ 

2、  while(usDataLen--)/*传输消息缓冲区*/      {          uIndex=uchCRCLo^*puchMsg++;/*计算CRC*/          uchCRCLo=uchCRCHi^auchCRCHi[uIndex];          uchCRCHi=auchCRCLo[uIndex];      }      return(uchCRCHi<<8

3、uchCRCLo);  }constuint8codeauchCRCHi[]={  0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,

4、  0x80,0x41,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,  0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,  0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,  0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x00,0xC1,  0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,  0x00,0xC1,0x81,0x40,0x01,0xC0

5、,0x80,0x41,0x00,0xC1,  0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,  0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,  0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,  0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,  0x81,0x40,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,  0x00,0xC

6、1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,  0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,  0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x01,0xC0,  0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,  0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,  0x80,0x41,0x00,0xC1,0x81,0x40,0x01,0xC0

7、,0x80,0x41,  0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,0x01,0xC0,  0x80,0x41,0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,  0x01,0xC0,0x80,0x41,0x00,0xC1,0x81,0x40,0x01,0xC0,  0x80,0x41,0x00,0xC1,0x81,0x40,0x00,0xC1,0x81,0x40,  0x01,0xC0,0x80,0x41,0x01,0xC0,0x80,0x41,0x00,0xC1,  0x81,0x40,0x00,0xC

8、1,0x81,0x40,0x01,0xC0,0x80,0x41,  0x00,0xC1,0x81,0x40,0x01,0xC0,0x80,0x41,0x01,0xC0,  0x80,0x41,0x00,0xC1,0x81,0x40  };  /*CRC低位字节值表   CRClowbyte */  constuint8codeauchCRCLo[]={  0x00,0xC0,0xC1,0x01,0xC3,0x03,0x02,0xC2,0xC6,0x06,  0x07,0xC7,0x05,0xC5,0xC

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